Voidwitch Saga Series by Corey J. White

Mariam Xi can kill you with her mind. She escaped the MEPHISTO lab where she was raised as a psychic supersoldier, which left her with terrifying capabilities, a fierce sense of independence, a deficit of trust and an experimental pet named Seven. She’s spent her life on the run, but the boogeymen from her past are catching up with her. An encounter with a bounty hunter has left her hanging helpless in a dying spaceship, dependent on the mercy of strangers... moreMariam Xi can kill you with her mind. She escaped the MEPHISTO lab where she was raised as a psychic supersoldier, which left her with terrifying capabilities, a fierce sense of independence, a deficit of trust and an experimental pet named Seven. She’s spent her life on the run, but the boogeymen from her past are catching up with her. An encounter with a bounty hunter has left her hanging helpless in a dying spaceship, dependent on the mercy of strangers.Penned in on all sides, Mariam chases rumors to find the one who sold her out. To discover the truth and defeat her pursuers, she’ll have to stare into the abyss and find the secrets of her past, her future, and her terrifying potential. less

Mars Xi is a living weapon, a genetically-manipulated psychic supersoldier with a body count in the thousands, and all she wanted was to be left alone. People who get involved with her get hurt, whether by MEPHISTO, by her psychic backlash, or by her acid tongue. It's not smart to get involved with Mars, but that doesn't stop some people from trying.The last time MEPHISTO came for Mars they took one of her friends with them. That was a mistake... moreMars Xi is a living weapon, a genetically-manipulated psychic supersoldier with a body count in the thousands, and all she wanted was to be left alone. People who get involved with her get hurt, whether by MEPHISTO, by her psychic backlash, or by her acid tongue. It's not smart to get involved with Mars, but that doesn't stop some people from trying.The last time MEPHISTO came for Mars they took one of her friends with them. That was a mistake. A force hasn't been invented that can stop a voidwitch on a rampage, and Mars won't rest until she's settled her debts. less

She killed the man who trained her. She killed the fleet that came for her. She killed the planet that caged her. Now she must confront her father.Mars Xi is on the run, a bounty on her head and a kill count on her conscience. All she has left are her mutant cat Ocho and her fellow human weapon Pale, a young boy wracked by seizures who can kill with a thought. She needs him treated, and she needs to escape, and the only thread left to pull is her frayed connection to her father, Marius Teo... moreShe killed the man who trained her. She killed the fleet that came for her. She killed the planet that caged her. Now she must confront her father.Mars Xi is on the run, a bounty on her head and a kill count on her conscience. All she has left are her mutant cat Ocho and her fellow human weapon Pale, a young boy wracked by seizures who can kill with a thought. She needs him treated, and she needs to escape, and the only thread left to pull is her frayed connection to her father, Marius Teo. That thread will take her to the outskirts of the galaxy, to grapple with witch-cults and privately-owned planets, and into the hands of the man who engineered her birth. less